Z77-A Z77-A-ASUS-0805 BIOS Extreme USB 3.0 Transfer Speed with USB 3.0 Boost and Native HDMI/DVI outputs DIGI+ VRM - Digital Power Control For CPU and iGPU USB 3.0 Boost - Lightning Fast Transfer Speeds! HDMI & DVI Outputs - High-definition Visual Enjoyment GPU Boost - Instant iGPU Level Up! ASUS EPU - Energy Efficiency All Around Superior Components -100% All Solid Capacitors & Extra Durable Stainless Steel Back I/O Windows 8 Ready – Assured Compatibility